Density-matrix renormalization-group studies for one-dimensional polarized Anderson-Hubbard model

被引：0
|
作者：
Okumura, M. [1 ,2 ]
Yamada, S. [1 ,2 ]
Machida, M. [1 ,2 ,3 ]
机构：
[1] Japan Atom Energy Agcy, CCSE, Taito Ku, Tokyo 1100015, Japan
[2] CREST JST, Kawaguchi, Saitama 3320012, Japan
[3] JST, TRIP, Sambancho Chiyoda Ku, Tokyo 1020075, Japan
来源：
PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS | 2010年 / 470卷
关键词：
Fulde-Ferrell-Larkin-Ovchinnikov state; Anderson-Hubbard model; Optical lattice; Density-matrix renormalization-group method; CONDENSED MATTER; SUPERCONDUCTIVITY; PHYSICS; GASES;
D O I：
10.1016/j.physc.2009.11.003
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
By using the density-matrix renormalization-group method, we study impurity effects on the pair correlation function of the one-dimensional spin-imbalanced Anderson-Hubbard model. In strongly-attractive interacting cases in the presence of weak random potentials, we find that the Fulde-Ferrell-Larkin-Ovchinnikov type pair correlation function with nodes decays slower than that of Bardeen-Cooper-Schrieffer type one without nodes. This means that the former type pairing is unexpectedly more robust against randomness in the strong coupling regime. (C) 2009 Elsevier B.V. All rights reserved.
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页码：S952 / S954
页数：3
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